Update Python SPK
- DSM5 only
- Add beta flag
- Remove duplicity
Update Python SPK changelog
Remove beta flag from Python SPK
Fix squid PLIST
Fix native env so native python/glibc can be compiled from within spk

Should prevent reports like #659, #746, #978 etc.
gc: Update PKG_DIST_SITE

- Update PKG_DIST_SITE since old site doesn't exists
- Added 'digests' file
Update btsync ver. to 1.3.94
Vim: Fix FRE description + add CSY description

In Makefile:
	- Backslash parentheses in FRE description to avoid their evaluation
	- Add CSY description
Fix missing space before equal sign
Add support for conf dir to spk mk

Closes #947
Add MariaDB dependency to packages on DSM 5

Fixes #924
giflib: Update PKG_DIST_SITE

Update PKG_DIST_SITE url to match correct path
Update libpng to 1.5.18
Update libjpeg to 9a

Closes #995
leptonica: New upstream version (1.70)

"cross/leptonica" is not used (yet) in spksrc so new upstream shouldn't make any conflict.
Remove no longer needed leptonica patch