[fpc-pascal] compiling 2.6.1 from 2.4.5

[Thierry B.]

Hi,

I come back to freepascal after one year and I wanted to build all 
versions from my already installed 2.2.5. Builds:

- 2.4.0 from 2.2.5 : OK
- 2.4.2 from 2.4.0 : OK
- 2.4.4 from 2.4.2 : OK
- 2.4.5 from 2.4.2 : OK
- 2.6.1 from 2.4.5 : NOK : __missing_command_DATA2INC -b -s fppkg.cfg 
fppkg.inc fppkg

I can see from http://wiki.freepascal.org/Fpcmake#Trouble_Shooting :

> his happens when a tool required by the make process is not found. Remedy: Add the path to the tool as an option to make, like DATA2INC=/path/to/data2inc, for the tool data2inc

Well, why only for 2.6.1? data2inc is in every previously build 
freepascal /bin directory.

Thierry B