Changes suggested by Per Bothner:

Changes suggested by Per Bothner:

	* gcj.texi (Input Options): Don't mention input files.
	(Code Generation): Updated --main information.
	(Invoking jcf-dump): Mention that --javap is incomplete.
	From Alexandre Petit-Bianco:
	(Warnings): Don't mention -Wunsupported-jdk11.
	My stuff:
	(Compatibility): Mention JDK 1.2-ness of libraries.
	(Resources): Mention resources used when writing gcj.

From-SVN: r39103