revive old BSDCTYPE LC_CTYPE data + chrtbl(1) support

[Takehiko NOZAKI]

unfortunately old BSDCTYPE LC_CTYPE data + chrtbl(1) support was dropped before NetBSD-6 release. it is completely wrong decision made by bikesched against keeping binary backward compatibility.

[Takehiko NOZAKI]

• Citrus/Rune now get the ability to read BSDCTYPE LC_CTYPE back again!
• chrtbl(1) is still missing in base, maybe better to make it pkgsrc-ize ?

[Takehiko NOZAKI]

example file is following:

LC_CTYPE        xx_XX.US-ASCII
isupper         0x41 - 0x5a
islower         0x61 - 0x7a
isdigit         0x30 - 0x39
isspace         0x20 0x9 - 0xd
ispunct         0x21 - 0x2f 0x3a - 0x40 0x5b - 0x60 0x7b - 0x7e
iscntrl         0x0 - 0x1f 0x7f
isblank         0x20
isxdigit        0x30 - 0x39 0x61 - 0x66 0x41 - 0x46
ul              <0x61 0x41> <0x62 0x42> <0x63 0x43> \
                <0x64 0x44> <0x65 0x45> <0x66 0x46> \
                <0x67 0x47> <0x68 0x48> <0x69 0x49> \
                <0x6a 0x4a> <0x6b 0x4b> <0x6c 0x4c> \
                <0x6d 0x4d> <0x6e 0x4e> <0x6f 0x4f> \
                <0x70 0x50> <0x71 0x51> <0x72 0x52> \
                <0x73 0x53> <0x74 0x54> <0x75 0x55> \
                <0x76 0x56> <0x77 0x57> <0x78 0x58> \
                <0x79 0x59> <0x7a 0x5a>
cswidth 1:1,0:0,0:0

$ chrtbl xx_XX.US-ASCII.src
$ sudo install -o root -g wheel -m 755 -d /usr/share/locale/xx_XX.US-ASCII
$ sudo install -o root -g wheel -m 644 xx_XX.US-ASCII /usr/share/locale/xx_XX.US-ASCII/LC_CTYPE
$ LANG=xx_XX.US-ASCII locale
LANG="xx_XX.US-ASCII"
LC_CTYPE="xx_XX.US-ASCII"
LC_COLLATE="C"
LC_TIME="C"
LC_NUMERIC="C"
LC_MONETARY="C"
LC_MESSAGES="C"
LC_ALL=""

[Takehiko NOZAKI]

BUGFIX: Issue #19 -- revive old BSDCTYPE LC_CTYPE data + chrtbl(1) support.

→ <<cset c812ba50b6b9>>

[Takehiko NOZAKI]

done.