[fortran, documentation, committed] accumulated backports from trunk

[Daniel Franke]

Backported accumulated documentation changes to 4.2.
With this patch, all intrinsics implemented in gfortran are documented.


2007-04-27  Daniel Franke  <franke.daniel@gmail.com>

	Backport from trunk:
	* intrinsic.texi (NULL, PACK, PRESENT, REPEAT, SCAN, SHAPE, 
	SIZE, TRANSPOSE, TRIM, VERIFY): New.
	(ADJUSTL, ADJUSTR, INDEX): Added cross references.
	(INT, INT2, INT8, LONG): Enabled section header.

	* intrinsic.texi (PRODUCT, RESHAPE, SPACING, SPREAD, SUM, 
	SYSTEM_CLOCK, TRANSFER, UNPACK): New.
	(DATE_AND_TIME, CPU_TIME, RRSPACING): Added cross references.

	* intrinsic.texi (AND, FPUT, FPUTC, MODULO, OR, SET_EXPONENT,
	XOR): Fixed examples.

	* gfortran.texi: Added node and menu entry for an option index.
	* invoke.texi: Moved command line option related entries of the concept 
	index to the option index.


Tested info, dvi and html targets on i686-pc-linux-gnu.

Regards
	Daniel

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