regularize format of source file headers, no code changes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

archival/gzip.c

@@ -36,7 +36,6 @@ a:       85.1% -- replaced with a.gz
 gzip: bogus: No such file or directory
 aa:      85.1% -- replaced with aa.gz
 */
-
 //config:config GZIP
 //config:	bool "gzip (19 kb)"
 //config:	default y
@@ -81,6 +80,7 @@ aa:      85.1% -- replaced with aa.gz
 //config:	enabled.
 
 //applet:IF_GZIP(APPLET(gzip, BB_DIR_BIN, BB_SUID_DROP))
+
 //kbuild:lib-$(CONFIG_GZIP) += gzip.o
 
 //usage:#define gzip_trivial_usage