Fixed some typos

NEWS.md

@@ -96,7 +96,7 @@ libFirm 1.20.0 (2011-12-07)
 * Experimental dwarf debugging support
 * Code cleanups, refactoring
 * Restructured API documentation
-* Bugfixes (we did alot of csmith testing)
+* Bugfixes (we did a lot of csmith testing)
 
 libFirm 1.19.1 (2011-05-17)
 ---------------------------

ir/be/ia32/ia32_transform.c

@@ -112,7 +112,7 @@ const x86_asm_constraint_list_t ia32_asm_constraints = {
 	['u'] = { MATCH_REG, FP, 1 << REG_FP_ST1 },
 	['x'] = { MATCH_REG, &ia32_reg_classes[CLASS_ia32_xmm], 0 },
 
-	// There are more constraints and in general there is alot of internal gcc
+	// There are more constraints and in general there is a lot of internal gcc
 	// logic at play not everything is documented in the manual. In the gcc
 	// source you can look at reload.c, stmt.c and constraints.md. I am not sure
 	// how much we want/need to understand and reimplement here.