[svn r98] Added support for std.c.stdlib.alloca via pragma(LLVM_internal, "alloca").

Added support for array .sort and .reverse properties.
Fixed some bugs with pointer arithmetic.
Disabled some DMD AST optimizations that was messing things up, destroying valuable information.
Added a KDevelop project file, this is what I use for coding LLVMDC now :)
Other minor stuff.

test/bug64.d

@@ -0,0 +1,10 @@
+module bug64;
+
+void main()
+{
+    float f;
+    float* p = &f;
+    float* end1 = p+1;
+    float* end2 = 1+p;
+    assert(end1 is end2);
+}