If you tend to use the same family of PICs, and the same hardware configurations (eg port B for an LCD display, or port A for input switches etc) then you can simply make one file with all the hardware definitions in, and then include that using one line in your main code.

For example, I tend to use an 18F2620 or 18F4620 in most of my projects, and use the same LCD and pins for input switches so I have
Code:
'*******************************************************************************
'  18F4620 config settings - for use with MPSAM
'*******************************************************************************

ASM 
  __CONFIG    _CONFIG1H, _OSC_HS_1H
  __CONFIG    _CONFIG2L, _PWRT_ON_2L  
  __CONFIG    _CONFIG2H, _WDT_ON_2H & _WDTPS_512_2H
  __CONFIG    _CONFIG3H, _MCLRE_ON_3H & _LPT1OSC_OFF_3H & _PBADEN_OFF_3H  
  __CONFIG    _CONFIG4L, _LVP_OFF_4L & _XINST_OFF_4L
ENDASM

'*******************************************************************************
' LCD (20 x 4) set up 
'*******************************************************************************

DEFINE LCD_DREG  PORTB                  ' LCD Data port
DEFINE LCD_DBIT  0                      ' starting Data bit (0 or 4)
DEFINE LCD_EREG  PORTB                  ' LCD Enable port
DEFINE LCD_EBIT  5                      '     Enable bit  (on EasyPIC 5 LCD)
DEFINE LCD_RSREG PORTB                  ' LCD Register Select port
DEFINE LCD_RSBIT 4                      '     Register Select bit   (on EasyPIC 5 LCD)
DEFINE LCD_BITS  4                      ' LCD bus size (4 or 8 bits)
DEFINE LCD_LINES 4                      ' number of lines on LCD
DEFINE LCD_COMMANDUS 2000               ' Command delay time in us 
DEFINE LCD_DATAUS 50                    ' Data delay time in us 

'*******************************************************************************
' Defines Statements
'*******************************************************************************

DEFINE  OSC 20                          ' 18F4520, 20mhz crystal
ADCON1 = $0F
clear    

'*******************************************************************************
'Analog and Comparator settings
'*******************************************************************************

ADCON0 = %00000000                      'AD converter module disabled
ADCON1 = %00001111                      'All Digital
ADCON2 = %00000000
CMCON = 7                               'Disable Comparators

'*******************************************************************************
'Port and Register settings  (interrupts)
'*******************************************************************************
    
TRISA  = %00010111              
TRISB  = %00000011 
TRISD  = %00000011              
T0CON  = %11000111

 ;----[UART Settings]------------------------------------------------------------

DEFINE HSER_RCSTA 90h ' Enable serial port & continuous receive
DEFINE HSER_TXSTA 24h ' Enable transmit, BRGH = 1
DEFINE HSER_CLROERR 1 ' Clear overflow automatically
DEFINE HSER_SPBRG 8   ' 9600 Baud @ SPBRGH = 2
BAUDCON.3 = 1         ' Enable 16 bit baudrate generator


RCSTA = $90   ' Enable serial port & continuous receive
TXSTA = $24   ' Enable transmit, BRGH = 1
SPBRG = 8     ' 9600 Baud @ -0.03%
SPBRGH = 2
BAUDCON.3 = 1 ' Enable 16 bit baudrate generator


RCIF                VAR PIR1.5                    ' USART receive flag
Char                VAR BYTE                      ' USART byte received
GIE                 VAR INTCON.7 
nTest               var byte

'*******************************************************************************
' Pins used for connections to outside world
'*******************************************************************************

DecButton          var PORTA.0	        'Press to Decrement Button
SetButton          var PORTA.1          'Press to Set/memorise Button
IncButton          var PORTA.2	        'Press to Increment Button

OnButton           var PORTA.0	        'Press to Decrement Button
OffButton          var PORTA.2	        'Press to Increment Button

H_butt             VAR PORTA.2          'hour increase 
M_butt             VAR PORTA.0          'minutes increase
S_butt             VAR PORTA.1          'set / memorise

SCLpin             var PORTC.3          'RTC pin - clk
SDApin             var PORTC.4          'RTC pin - data
led                var PORTD.4
An then save that as "hardware18F4620" and then in the main program use the
Code:
INCLUDE "hardware18F4620.pbp"
Saves having to write out or copy and paste lots of code