a-stmaco.ads, [...]: Minor reformatting througout (including new function specs) Add ??? comments...

	* a-stmaco.ads, exp_util.ads, exp_util.adb, i-cpp.ads, i-cpp.adb:
	Minor reformatting througout (including new function specs)
	Add ??? comments asking for clarification.

From-SVN: r90901