"ETICS-less releases" - creating new common targets in Makefile.inc:

"ETICS-less releases" - creating new common targets in Makefile.inc:
- dist:
	- files to distribute in source tarball listed in SOURCES in each Makefile
	- fix files permissions, using SOURCES_EXEC for executables
	- some files included automaticaly (configure, several from project)
- distcheck:
	- helper target, which compares current directory content with
	  generated source tarball
	- ignores some service files (CVS, ...)
- 'rpm' and 'deb' targets: generating of the source packages
- new targets in summary Makefile: 'release-rpm' and 'release-deb'