fix build issues, reverted all autoconf/automake files to original gaw3-20250128, https://www.rvq.fr/php/ndl.php?id=gaw.?-.*

add *.in and */*.in files

Merge pull request #17 from HenryAEvans/main

Fix compile issues on GCC 14

Update README.md

use int64_t instead of long for previous overflow fix: on some architectures long is still a 32 bit number

Merge pull request #13 from bugraonal/main

Fixed overflowing value for big spice raw files

added link to github user

add more info about gettext issues

remove outdated info about po file regeneration

update build commands

merged changes from gaw3-20220315, rebuilt po files

reverted autoconfig files to original gaw3-20200922, seems this avoids installation problems on various systems

Merge branch 'main' of github.com:StefanSchippers/xschem-gaw