Added ELIF

In addition, make some formatting changes, and add some extra error handling (for when ELIF, ELSE, or ENDC are encountered without a corresponding IF).

src/asm/main.c

@@ -23,6 +23,7 @@ char **cldefines;
 clock_t nStartClock, nEndClock;
 SLONG nLineNo;
 ULONG nTotalLines, nPass, nPC, nIFDepth, nErrors;
+bool skipElif;
 
 extern int yydebug;
 
@@ -414,6 +415,7 @@ main(int argc, char *argv[])
 	nLineNo = 1;
 	nTotalLines = 0;
 	nIFDepth = 0;
+	skipElif = true;
 	nPC = 0;
 	nPass = 1;
 	nErrors = 0;
@@ -440,6 +442,7 @@ main(int argc, char *argv[])
 	nTotalLines = 0;
 	nLineNo = 1;
 	nIFDepth = 0;
+	skipElif = true;
 	nPC = 0;
 	nPass = 2;
 	nErrors = 0;