Respecting package name letter case

[mallniya]

Hello, I've been using pytoport lately and only confusing issue is an error of trying to find package by it's name in lowercase, whatever case initially was given to pytoport. For instance:

# pytoport tmp Naked                                                
[-] Generating files for Naked...
[-] Generating Makefile
[-] Makefile generated.
[-] Generating pkg-descr
[-] Downloading source files
/!\ py27-naked-0.1.31: Makefile warnings, please consider fixing /!\

Not validating first entry in CATEGORIES due to being outside of PORTSDIR. Please ensure this is proper when committing.

===>   py27-naked-0.1.31 depends on file: /usr/local/sbin/pkg - found
=> naked-0.1.31.tar.gz doesn't seem to exist in /usr/home/mallniya/tmp/_distdir/.
=> Attempting to fetch https://pypi.python.org/packages/source/n/naked/naked-0.1.31.tar.gz
fetch: https://pypi.python.org/packages/source/n/naked/naked-0.1.31.tar.gz: Not Found
=> Attempting to fetch http://distcache.FreeBSD.org/ports-distfiles/naked-0.1.31.tar.gz
fetch: http://distcache.FreeBSD.org/ports-distfiles/naked-0.1.31.tar.gz: Not Found
=> Couldn't fetch it - please try to retrieve this
=> port manually into /usr/home/mallniya/tmp/_distdir/ and try again.
*** Error code 1

Stop.
make[1]: stopped in /usr/home/mallniya/tmp/py-naked
*** Error code 1

Stop.
make: stopped in /usr/home/mallniya/tmp/py-naked
[!] Error generating checksum (errno 1)

As we can see: https://pypi.python.org/packages/source/n/naked/naked-0.1.31.tar.gz really doesn't exist, while: https://pypi.python.org/packages/source/N/Naked/Naked-0.1.31.tar.gz (version with upper N in Naked) is naturally can be found, and I want pytoport to do so and that's why command is pytoport tmp Naked and not pytoport tmp naked. I assume it's a bug.