Add support for the esint package

Add support for the esint package

	* src/LaTeXFeatures.C
	(LaTeXFeatures::getPackages): handle esint and wasysym

	* src/mathed/MathMacroTable.[Ch]
	(requires_): New member: tell the feature this macro requires
	(MacroTable::insert): take new requires arg

	* src/mathed/MathMacroTemplate.C
	(MathMacroTemplate::asMacroData): adjust to change above

	* src/mathed/MathSupport.C
	(fontinfos): add esint10 font

	* src/mathed/InsetMathHull.C
	(InsetMathHull::doDispatch): AMS_ON -> package_on

	* src/mathed/MathMacroTable.h

	* src/mathed/MathFactory.C
	(initSymbols): read and store requires field for symbols

	* src/mathed/InsetMathSymbol.C
	(InsetMathSymbol::metrics): handle esint
	(InsetMathSymbol::takesLimits): ditto

	* src/buffer.C
	(LYX_FORMAT): update format
	(Buffer::validate): handle esint, AMS_ON -> package_on

	* src/bufferparams.C:
	(AMSTranslator): Rename to PackageTranslator
	(BufferParams::readToken): Read \use_esint
	(BufferParams::writeFile): Write \use_esint

	* src/frontends/qt4/QDocumentDialog.C: handle esint

	* src/frontends/qt4/ui/MathsUi.ui : add esint checkboxes

	* src/frontends/qt4/GuiFontLoader.C
	(symbol_fonts: Add esint10 font
	(symbolFamily): handle esint10 font
	(isChosenFont): Add comment

	* src/frontends/controllers/ControlMath.C
	(latex_varsz): Add new integral symbols

	* src/support/fontutils.C
	(win_fonts_truetype): Add esint10 font

	* src/bufferparams.h
	(enum AMS): rename to enum Package
	(use_esint): new parameter

	* src/lyxfont.[Ch]: Add esint font

	* lib/symbols: Add new integral symbols

	* lib/lyx2lyx/LyX.py
	(format_relation): Update format

	* lib/lyx2lyx/lyx_1_5.py: handle new format

	* lib/chkconfig.ltx: Test esint package

	* lib/images/math/oiintop.xpm
	* lib/images/math/sqintop.xpm
	* lib/images/math/sqint.xpm
	* lib/images/math/ointctrclockwiseop.xpm
	* lib/images/math/ointctrclockwise.xpm
	* lib/images/math/iiintop.xpm
	* lib/images/math/iintop.xpm
	* lib/images/math/sqiint.xpm
	* lib/images/math/iiint.xpm
	* lib/images/math/ointclockwiseop.xpm
	* lib/images/math/oiint.xpm
	* lib/images/math/dotsintop.xpm
	* lib/images/math/sqiintop.xpm
	* lib/images/math/ointclockwise.xpm
	* lib/images/math/iiiintop.xpm
	* lib/images/math/dotsint.xpm
	* lib/images/math/iiiint.xpm
	* lib/images/math/iint.xpm: new icons

	* lib/doc/LaTeXConfig.lyx.in: Add docs for esint package

	* lib/doc/UserGuide.lyx: Add short documentation of integral symbols

	* lib/Makefile.am: Add new files

	* development/scons/scons_manifest.py: ditto

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@15907 a592a061-630c-0410-9148-cb99ea01b6c8