Pascal compiler now runs.

--HG--
branch : dtrg-buildsystem
rename : lang/basic/build.mk => lang/pc/build.mk
rename : lang/cem/cemcom.ansi/build.mk => lang/pc/comp/build.mk
rename : lang/basic/lib/build.mk => lang/pc/libpc/build.mk

lang/pc/comp/chk_expr.c

@@ -3,8 +3,10 @@
 /*	Check expressions, and try to evaluate them as far as possible.
 */
 
+#include    "parameters.h"
 #include	"debug.h"
 
+#include    <stdlib.h>
 #include	<alloc.h>
 #include	<assert.h>
 #include	<em_arith.h>