trim extra newlines in help texts

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

console-tools/loadkmap.c

@@ -10,8 +10,9 @@
 //usage:#define loadkmap_trivial_usage
 //usage:       "< keymap"
 //usage:#define loadkmap_full_usage "\n\n"
-//usage:       "Load a binary keyboard translation table from stdin\n"
-/* //usage:     "\n	-C TTY	Affect TTY instead of /dev/tty" */
+//usage:       "Load a binary keyboard translation table from stdin"
+////usage:       "\n"
+////usage:       "\n	-C TTY	Affect TTY instead of /dev/tty"
 //usage:
 //usage:#define loadkmap_example_usage
 //usage:       "$ loadkmap < /etc/i18n/lang-keymap\n"

coreutils/basename.c

@@ -31,7 +31,7 @@
 //usage:#define basename_trivial_usage
 //usage:       "FILE [SUFFIX]"
 //usage:#define basename_full_usage "\n\n"
-//usage:       "Strip directory path and .SUFFIX from FILE\n"
+//usage:       "Strip directory path and .SUFFIX from FILE"
 //usage:
 //usage:#define basename_example_usage
 //usage:       "$ basename /usr/local/bin/foo\n"

procps/powertop.c

@@ -674,7 +674,7 @@ static void show_timerstats(void)
 //usage:#define powertop_trivial_usage
 //usage:       ""
 //usage:#define powertop_full_usage "\n\n"
-//usage:       "Analyze power consumption on Intel-based laptops\n"
+//usage:       "Analyze power consumption on Intel-based laptops"
 
 int powertop_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int powertop_main(int UNUSED_PARAM argc, char UNUSED_PARAM **argv)

procps/pwdx.c

@@ -21,7 +21,7 @@
 //usage:#define pwdx_trivial_usage
 //usage:       "PID..."
 //usage:#define pwdx_full_usage "\n\n"
-//usage:       "Show current directory for PIDs\n"
+//usage:       "Show current directory for PIDs"
 
 #include "libbb.h"