fbc: allow command line options passed to as, gcc, ld to be longer than 128 characters

- fixes github # 298: -Wc has a limit of 128 characters
- previously fbc used fixed length strings of 128 bytes to hold the options to as, gcc, and ld
- now uses variable length string instead

Author: jayrm

changelog.txt

@@ -45,6 +45,7 @@ Version 1.08.0
 - github #203: allow casts of addresses on static initializers 
 - only write debug line information for statements and don't write comments / empty lines / directives for top level source code in assembly debug ouput
 - optimize byref 'm += s' string concatenations to fb_StrConcatByref() which will check for same string descriptor at run-time which can't be determined at compile time for byref parameters.
+- github #298: allow command line options passed to as, gcc, ld  to be longer than 128 characters by using string types internally
 
 [added]
 - extern "rtlib": respects the parent namespace, uses default fb calling convention and C style name mangling

src/compiler/fbc.bas

@@ -25,9 +25,9 @@ enum
 end enum
 
 type FBC_EXTOPT
-	gas			as zstring * 128
-	ld			as zstring * 128
-	gcc			as zstring * 128
+	gas			as string
+	ld			as string
+	gcc			as string
 end type
 
 type FBCIOFILE