Formatting: normalise back to 4-space indentation.

In several pieces of development recently I've run across the
occasional code block in the middle of a function which suddenly
switched to 2-space indent from this code base's usual 4. I decided I
was tired of it, so I ran the whole code base through a re-indenter,
which made a huge mess, and then manually sifted out the changes that
actually made sense from that pass.

Indeed, this caught quite a few large sections with 2-space indent
level, a couple with 8, and a handful of even weirder things like 3
spaces or 12. This commit fixes them all.

crypto/blowfish.c

@@ -430,7 +430,7 @@ static void blowfish_msb_decrypt_cbc(unsigned char *blk, int len,
 }
 
 static void blowfish_msb_sdctr(unsigned char *blk, int len,
-                                     BlowfishContext * ctx)
+                               BlowfishContext * ctx)
 {
     uint32_t b[2], iv0, iv1, tmp;