*: slap on a few ALIGN* where appropriate

The result of looking at "grep -F -B2 '*fill*' busybox_unstripped.map"

function                                             old     new   delta
.rodata                                           108586  108460    -126
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-126)           Total: -126 bytes
   text	   data	    bss	    dec	    hex	filename
 970412	   4219	   1848	 976479	  ee65f	busybox_old
 970286	   4219	   1848	 976353	  ee5e1	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/libbb/appletlib.c b/libbb/appletlib.c
index 03389f5..841b3b8 100644
--- a/libbb/appletlib.c
+++ b/libbb/appletlib.c
@@ -651,7 +651,7 @@
 # if ENABLE_FEATURE_INSTALLER
 static const char usr_bin [] ALIGN1 = "/usr/bin/";
 static const char usr_sbin[] ALIGN1 = "/usr/sbin/";
-static const char *const install_dir[] = {
+static const char *const install_dir[] ALIGN_PTR = {
 	&usr_bin [8], /* "/" */
 	&usr_bin [4], /* "/bin/" */
 	&usr_sbin[4]  /* "/sbin/" */