make.adb (Gnatmake): Add to table Library_Projs only library projects that are not...

make.adb (Gnatmake): Add to table Library_Projs only library projects that are not extended.

2011-08-03  Vincent Celier  <celier@adacore.com>

	* make.adb (Gnatmake): Add to table Library_Projs only library projects
	that are not extended. Do not check if a library project that is
	extended should be regenerated. Do not add to table Library_Paths the
	libraries that are in extended projects. Link only with libraries that
	are in libray projects that are not extended.
	* prj-nmsc.adb (Check_Library_Attributes): Do not reset flag Library
	for a library project that is extended.

From-SVN: r177269