Suppress some asm warnings when building compiler output

Changelog.txt

@@ -13,6 +13,7 @@ Version 7.0.0
 - Made _float_tointeger() saturate when the result is too big/small
 - Made off_t be 64 bits, to allow for files > 2GB
 - Revised file systems to all read from devices; this makes it possible to do loopback file systems or to use non-standard devices for file systems
+- Suppress some asm warnings when building assembler output
 
 Version 6.9.10
 - Fix compilation error when GETWORD is replaced by MOV or MUL

cmdline.c

@@ -427,7 +427,7 @@ int ProcessCommandLine(CmdLineOptions *cmd)
             }
             if (cmd->compile)  {
                 gl_caseSensitive = !compile_original;
-                gl_warn_flags &= ~WARN_ASM_FIRST_PASS; // already issued warnings
+                gl_warn_flags &= ~(WARN_ASM_FIRST_PASS|WARN_ASM_USAGE); // already issued warnings
                 gl_optimize_flags = 0; // no need to re-optimize
                 gl_cenv_flags = 0;     // already handled C startup code
                 CompileAsmToBinary(binname, asmname);