Speed improvements for crypto library: Before and After

What follows are collected numbers showing that the performance differences, after Jason Thorpe's recent commits, are quite noticeable:

Blowfish

Before:
Doing blowfish cbc for 3s on 8 size blocks: 2891026 blowfish cbc's in 2.97s
Doing blowfish cbc for 3s on 64 size blocks: 411766 blowfish cbc's in 3.10s
Doing blowfish cbc for 3s on 256 size blocks: 104721 blowfish cbc's in 3.00s
Doing blowfish cbc for 3s on 1024 size blocks: 26291 blowfish cbc's in 2.98s
Doing blowfish cbc for 3s on 8192 size blocks: 3290 blowfish cbc's in 3.10s
type              8 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes
blowfish cbc      7787.28k     8755.16k     8936.19k     9034.22k     8954.05k

After:
Doing blowfish cbc for 3s on 8 size blocks: 4573792 blowfish cbc's in 3.10s
Doing blowfish cbc for 3s on 64 size blocks: 713440 blowfish cbc's in 2.99s
Doing blowfish cbc for 3s on 256 size blocks: 183125 blowfish cbc's in 3.00s
Doing blowfish cbc for 3s on 1024 size blocks: 46221 blowfish cbc's in 3.00s
Doing blowfish cbc for 3s on 8192 size blocks: 5787 blowfish cbc's in 3.00s
type              8 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes
blowfish cbc     12156.26k    15270.96k    15626.67k    15776.77k    15802.37k

MD5

Before:
Doing md5 for 3s on 8 size blocks: 1490796 md5's in 3.00s
Doing md5 for 3s on 64 size blocks: 895849 md5's in 3.00s
Doing md5 for 3s on 256 size blocks: 410807 md5's in 3.00s
Doing md5 for 3s on 1024 size blocks: 129416 md5's in 3.00s
Doing md5 for 3s on 8192 size blocks: 17527 md5's in 3.00s
type              8 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes
md5               3975.46k    19111.45k    35055.53k    44173.99k    47860.39k

After:
Doing md5 for 3s on 8 size blocks: 2041410 md5's in 3.00s
Doing md5 for 3s on 64 size blocks: 1345402 md5's in 3.00s
Doing md5 for 3s on 256 size blocks: 669827 md5's in 3.10s
Doing md5 for 3s on 1024 size blocks: 221744 md5's in 2.96s
Doing md5 for 3s on 8192 size blocks: 30685 md5's in 3.00s
type              8 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes
md5               5443.76k    28701.91k    56968.68k    76711.44k    83790.51k

RMD160

Before:
Doing rmd160 for 3s on 8 size blocks: 778828 rmd160's in 3.00s
Doing rmd160 for 3s on 64 size blocks: 430214 rmd160's in 3.00s
Doing rmd160 for 3s on 256 size blocks: 182108 rmd160's in 3.00s
Doing rmd160 for 3s on 1024 size blocks: 55050 rmd160's in 3.00s
Doing rmd160 for 3s on 8192 size blocks: 7339 rmd160's in 3.00s
type              8 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes
rmd160            2076.87k     9177.90k    15539.88k    18790.40k    20040.36k

After:
Doing rmd160 for 3s on 8 size blocks: 1084941 rmd160's in 3.00s
Doing rmd160 for 3s on 64 size blocks: 617966 rmd160's in 3.00s
Doing rmd160 for 3s on 256 size blocks: 267381 rmd160's in 2.99s
Doing rmd160 for 3s on 1024 size blocks: 82001 rmd160's in 3.00s
Doing rmd160 for 3s on 8192 size blocks: 10974 rmd160's in 3.00s
type              8 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes
rmd160            2893.18k    13183.27k    22892.82k    27989.67k    29966.34k

BIGNUM routines

Before:
Doing 512 bit sign dsa's for 10s: 965 512 bit DSA signs in 9.97s
Doing 512 bit verify dsa's for 10s: 766 512 bit DSA verify in 9.93s
Doing 1024 bit sign dsa's for 10s: 276 1024 bit DSA signs in 9.99s
Doing 1024 bit verify dsa's for 10s: 217 1024 bit DSA verify in 9.93s
                  sign    verify    sign/s verify/s
dsa  512 bits   0.0103s   0.0130s     96.8     77.1
dsa 1024 bits   0.0362s   0.0458s     27.6     21.9

After:
Doing 512 bit sign dsa's for 10s: 3742 512 bit DSA signs in 9.88s
Doing 512 bit verify dsa's for 10s: 3065 512 bit DSA verify in 9.92s
Doing 1024 bit sign dsa's for 10s: 1357 1024 bit DSA signs in 9.99s
Doing 1024 bit verify dsa's for 10s: 1094 1024 bit DSA verify in 9.83s
                  sign    verify    sign/s verify/s
dsa  512 bits   0.0026s   0.0032s    378.7    309.0
dsa 1024 bits   0.0074s   0.0090s    135.8    111.3