New option --relax-checks that disable the check for a match beween size oif

an expression and the address size. Will allow short branches between segments
among other things. Suggested by Spiro Trikaliotis.


git-svn-id: svn://svn.cc65.org/cc65/trunk@5810 b7a2c559-68d2-44c3-8de9-860c34a00d81

src/ca65/global.h

@@ -67,6 +67,7 @@ extern unsigned char   	SmartMode;     	    /* Smart mode */
 extern unsigned char   	DbgSyms;       	    /* Add debug symbols */
 extern unsigned char   	LineCont;      	    /* Allow line continuation */
 extern unsigned char    LargeAlignment;     /* Don't warn about large alignments */
+extern unsigned char    RelaxChecks;        /* Relax a few assembler checks */
 
 /* Emulation features */
 extern unsigned char   	DollarIsPC;    	    /* Allow the $ symbol as current PC */