Fix whitespace in previous Makefile.in changes

Makefile.in

@@ -164,7 +164,8 @@ bitmapdir=@bitmapdir@
 # We use $(srcdir) explicitly in dependencies so as not to depend on VPATH.
 srcdir=@srcdir@
 abs_srcdir=@abs_srcdir@
-abs_top_srcdir=@abs_top_srcdir@	# MinGW CPPFLAGS may use this
+# MinGW CPPFLAGS may use this.
+abs_top_srcdir=@abs_top_srcdir@
 
 # Where the manpage source files are kept.
 mansrcdir=$(srcdir)/doc/man

lib-src/Makefile.in

@@ -84,7 +84,8 @@ VPATH=@srcdir@
 
 # The top-level source directory, also set by configure.
 top_srcdir=@top_srcdir@
-abs_top_srcdir=@abs_top_srcdir@	# MinGW CPPFLAGS may use this
+# MinGW CPPFLAGS may use this.
+abs_top_srcdir=@abs_top_srcdir@
 
 # ==================== Emacs-specific directories ====================
 

lwlib/Makefile.in

@@ -23,7 +23,8 @@
 # and set up to be configured by ../configure.
 
 srcdir=@srcdir@
-abs_top_srcdir=@abs_top_srcdir@	# MinGW CPPFLAGS may use this
+# MinGW CPPFLAGS may use this.
+abs_top_srcdir=@abs_top_srcdir@
 VPATH=@srcdir@
 @SET_MAKE@
 C_SWITCH_X_SITE=@C_SWITCH_X_SITE@

nt/Makefile.in

@@ -76,7 +76,8 @@ VPATH=@srcdir@
 
 # The top-level source directory, also set by configure.
 top_srcdir=@top_srcdir@
-abs_top_srcdir=@abs_top_srcdir@	# MinGW CPPFLAGS may use this
+# MinGW CPPFLAGS may use this.
+abs_top_srcdir=@abs_top_srcdir@
 
 # ==================== Emacs-specific directories ====================
 

oldXMenu/Makefile.in

@@ -43,7 +43,8 @@
 ### Code:
 
 srcdir=@srcdir@
-abs_top_srcdir=@abs_top_srcdir@	# MinGW CPPFLAGS may use this
+# MinGW CPPFLAGS may use this.
+abs_top_srcdir=@abs_top_srcdir@
 VPATH=@srcdir@
 C_SWITCH_X_SITE=@C_SWITCH_X_SITE@
 C_SWITCH_SYSTEM=@C_SWITCH_SYSTEM@

src/Makefile.in

@@ -28,7 +28,8 @@ SHELL = @SHELL@
 # Here are the things that we expect ../configure to edit.
 # We use $(srcdir) explicitly in dependencies so as not to depend on VPATH.
 srcdir = @srcdir@
-abs_top_srcdir=@abs_top_srcdir@	# MinGW CPPFLAGS may use this
+# MinGW CPPFLAGS may use this.
+abs_top_srcdir=@abs_top_srcdir@
 ntsource = $(srcdir)/../nt
 abs_builddir = @abs_builddir@
 VPATH = $(srcdir)