Aboriginal linux/musl build fixes

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

applets/usage_compressed

@@ -20,6 +20,7 @@ exec >"$target.$$"
 
 echo '#define UNPACKED_USAGE "" \'
 "$loc/usage" | od -v -b \
+| grep -v '^ ' \
 | $SED -e 's/^[^ ]*//' \
 	-e 's/ //g' \
 	-e '/^$/d' \
@@ -27,6 +28,13 @@ echo '#define UNPACKED_USAGE "" \'
 	-e 's/^/"/' \
 	-e 's/$/" \\/'
 echo ''
+# "grep -v '^ '" is for toybox's od bug: od -b prints some extra lines:
+#0000000 010 000 010 000 133 055 144 146 135 040 133 055 143 040 103 117
+#         000010 000010 026533 063144 020135 026533 020143 047503
+#0000020 116 106 104 111 122 135 040 133 055 154 040 114 117 107 106 111
+#         043116 044504 056522 055440 066055 046040 043517 044506
+#0000040 114 105 135 040 133 055 141 040 101 103 124 111 117 116 106 111
+#         042514 020135 026533 020141 041501 044524 047117 044506
 
 echo '#define PACKED_USAGE \'
 ## Breaks on big-endian systems!
@@ -40,6 +48,7 @@ echo '#define PACKED_USAGE \'
 ##	-e 's/\(..\)\(..\)/0x\2,0x\1,/g'
 ##	-e 's/$/ \\/'
 "$loc/usage" | bzip2 -1 | $DD bs=2 skip=1 2>/dev/null | od -v -b \
+| grep -v '^ ' \
 | $SED -e 's/^[^ ]*//' \
 	-e 's/ //g' \
 	-e '/^$/d' \