brew doctor error

error
    
    $ brew doctor
    Warning: An outdated version of Git was detected in your PATH.
    Git 1.7.10 or newer is required to perform checkouts over HTTPS from GitHub.
    Please upgrade: brew upgrade git
    
    Warning: Unbrewed dylibs were found in /usr/local/lib.
    If you didn't put them there on purpose they could cause problems when
    building Homebrew formulae, and may need to be deleted.
    
    Unexpected dylibs:
        /usr/local/lib/libexslt.0.dylib
        /usr/local/lib/libexslt.dylib
        /usr/local/lib/libhistory.6.0.dylib
        /usr/local/lib/libhistory.6.dylib
        /usr/local/lib/libhistory.dylib
        /usr/local/lib/liblzma.5.dylib
        /usr/local/lib/libreadline.6.0.dylib
        /usr/local/lib/libreadline.6.dylib
        /usr/local/lib/libreadline.dylib
        /usr/local/lib/libruby.1.8.7.dylib
        /usr/local/lib/libruby.1.8.dylib
        /usr/local/lib/libruby.dylib
        /usr/local/lib/libsqlite3.0.8.6.dylib
        /usr/local/lib/libsqlite3.0.dylib
        /usr/local/lib/libsqlite3.dylib
        /usr/local/lib/libxml2.2.dylib
        /usr/local/lib/libxml2.dylib
        /usr/local/lib/libxslt.1.dylib
        /usr/local/lib/libxslt.dylib
    
    Warning: Unbrewed .la files were found in /usr/local/lib.
    If you didn't put them there on purpose they could cause problems when
    building Homebrew formulae, and may need to be deleted.
    
    Unexpected .la files:
        /usr/local/lib/libexslt.la
        /usr/local/lib/libsqlite3.la
        /usr/local/lib/libxml2.la
        /usr/local/lib/libxslt.la
    
    Warning: Unbrewed .pc files were found in /usr/local/lib/pkgconfig.
    If you didn't put them there on purpose they could cause problems when
    building Homebrew formulae, and may need to be deleted.
    
    Unexpected .pc files:
        /usr/local/lib/pkgconfig/libexslt.pc
        /usr/local/lib/pkgconfig/liblzma.pc
        /usr/local/lib/pkgconfig/libxml-2.0.pc
        /usr/local/lib/pkgconfig/libxslt.pc
        /usr/local/lib/pkgconfig/sqlite3.pc
    
    Warning: Unbrewed static libraries were found in /usr/local/lib.
    If you didn't put them there on purpose they could cause problems when
    building Homebrew formulae, and may need to be deleted.
    
    Unexpected static libraries:
        /usr/local/lib/libexslt.a
        /usr/local/lib/libhistory.a
        /usr/local/lib/liblzma.a
        /usr/local/lib/libreadline.a
        /usr/local/lib/libruby-static.a
        /usr/local/lib/libsqlite3.a
        /usr/local/lib/libxml2.a
        /usr/local/lib/libxslt.a
    
    Warning: The version of libcurl provided with Mac OS X 10.5 has outdated
    SSL certificates.
    
    This can cause problems when running Homebrew commands that use Git to
    fetch over HTTPS, e.g. `brew update` or installing formulae that perform
    Git checkouts.
    
    You can force Git to ignore these errors:
      export GIT_SSL_NO_VERIFY=1
    or
      git config --global http.sslVerify false