tokyo-cabinet: fix compile error

Removed the "--enable-fastest" option. The option causes a compile error
using the latest XCode tools.

==> Configuration
HOMEBREW_VERSION: 0.9.5
HEAD: 66c97ac4ce9f538d4ae3649d7bd305014e7b6c91
CPU: quad-core 64-bit ivybridge
OS X: 10.9.2-x86_64
Xcode: 5.1
CLT: 5.1.0.0.1.1393561416
X11: 2.7.5 => /opt/X11
==> ENV
HOMEBREW_CC: clang
HOMEBREW_CXX: clang++
MAKEFLAGS: -j4
CMAKE_PREFIX_PATH: /usr/local
CMAKE_INCLUDE_PATH:
/usr/include/libxml2:/System/Library/Frameworks/OpenGL.framework/Versions/Current/Headers
CMAKE_LIBRARY_PATH:
/System/Library/Frameworks/OpenGL.framework/Versions/Current/Libraries
PKG_CONFIG_LIBDIR:
/usr/lib/pkgconfig:/usr/local/Library/ENV/pkgconfig/10.9
ACLOCAL_PATH: /usr/local/share/aclocal
PATH: /usr/local/Library/ENV/4.3:/usr/bin:/bin:/usr/sbin:/sbin

- startlog
clang: note: this will be a hard error (cannot be downgraded to a
warning) in the future
clang: error: unknown argument: '-fforce-addr'
[-Wunused-command-line-argument-hard-error-in-future]
clang: note: this will be a hard error (cannot be downgraded to a
warning) in the future
- endlog

Signed-off-by: Rommel G Custodio <sessyargc@gmail.com>