Removed (pretty inconsistently used) tab chars from source code base.

libsrc/common/strerror.s

@@ -5,16 +5,16 @@
 ; /* Map an error number to an error message */
 ;
 
- 	.export	     	_strerror
-	.import	     	__sys_errlist
+        .export         _strerror
+        .import         __sys_errlist
 
-	.include     	"errno.inc"
+        .include        "errno.inc"
 
 _strerror:
-	cpx	#$00 		; High byte must be zero
-       	bne    	@L1  		; Jump if invalid error
-	cmp    	#EMAX		; Valid error code (map EUNKNOWN to 0)?
-    	bcc    	@L2  		; Jump if ok
+        cpx     #$00            ; High byte must be zero
+        bne     @L1             ; Jump if invalid error
+        cmp     #EMAX           ; Valid error code (map EUNKNOWN to 0)?
+        bcc     @L2             ; Jump if ok
 
 ; The given error code is invalid
 
@@ -22,14 +22,14 @@ _strerror:
         sta     __errno
         lda     #>EINVAL        ; = 0
         sta     __errno+1
-;       lda	#$00		; A contains zero: "Unknown error"
+;       lda     #$00            ; A contains zero: "Unknown error"
 
 ; Load the pointer to the error message and return
 
-@L2:	asl	a		; * 2
-	tay
-       	ldx	__sys_errlist+1,y
-	lda	__sys_errlist,y
-	rts
+@L2:    asl     a               ; * 2
+        tay
+        ldx     __sys_errlist+1,y
+        lda     __sys_errlist,y
+        rts