support prefix increment and decrement, fix parsing opening parens fix

support prefix increment and decrement, fix parsing opening parens fix

2006-07-31  Jürg Billeter  <j@bitron.ch>

	* vala/parser.y: support prefix increment and decrement, fix parsing
	  opening parens
	* vala/valasemanticanalyzer.vala: fix some bugs in error handling,
	  support prefix increment and decrement
	* vala/valacodegenerator.vala: support prefix increment and decrement
	* vala/valanamespace.vala: add interface documentation, use implicit
	  namespace specification
	* vala/valaunaryexpression.vala: support prefix increment and decrement
	* ccode/valaccodeunaryexpression.vala: support prefix increment and
	  decrement
	* vapi/glib-2.0.vala: add Environment struct

svn path=/trunk/; revision=87