Remove .linenumber and .filename; use hol0 and hol0+4.

We need this because some .e files in lang/ are using 'loe 0' and 'lae
4' to load the line number from hol0 and filename from hol0+4.

mach/powerpc/ncg/table

@@ -1893,16 +1893,16 @@ PATTERNS
 	pat fil                            /* Set current filename */
 		leaving
 			lae $1
-			ste ".filename"
+			ste "hol0+4"
 			
 	pat lin                            /* Set current line number */
 		leaving
 			loc $1
-			ste ".linenumber"
+			ste "hol0"
 
 	pat lni                            /* Increment line number */
 		leaving
-			ine ".linenumber"			
+			ine "hol0"
 			
 	pat lim                            /* Load EM trap ignore mask */
 		leaving

plat/linuxppc/boot.s

@@ -57,7 +57,3 @@ begtext:
 .define .trppc, .ignmask
 .comm .trppc, 4              ! ptr to user trap handler
 .comm .ignmask, 4            ! user trap ignore mask 
-
-.define .linenumber, .filename
-.comm .linenumber, 4         ! current linenumber (used for debugging)
-.comm .filename, 4           ! ptr to current filename (used for debugging)