Port sc7 to C++.

sourcepawn/compiler/AMBuilder

@@ -88,7 +88,7 @@ binary.sources += [
   'sc4.c',
   'sc5.c',
   'sc6.c',
-  'sc7.c',
+  'sc7.cpp',
   'scexpand.cpp',
   'sci18n.cpp',
   'sclist.cpp',

sourcepawn/compiler/sc7-in.scp

@@ -41,12 +41,17 @@ unsigned char sequences_table[][2] = {
 /*-*SCPACK end of pair table, do not change or remove this line */
 
 #define seqsize(o,p)    (opcodes(o)+opargs(p))
+typedef struct {
+  const char *find;
+  const char *replace;
+  int savesize;         /* number of bytes saved (in bytecode) */
+} PRE_SEQUENCE;
 typedef struct {
   char *find;
   char *replace;
   int savesize;         /* number of bytes saved (in bytecode) */
 } SEQUENCE;
-static SEQUENCE sequences_cmp[] = {
+static PRE_SEQUENCE sequences_cmp[] = {
   /* A very common sequence in four varieties
    *    load.s.pri n1           load.s.pri n2
    *    push.pri                load.s.alt n1