switch to sha256 checksums

* upgrade some broken packages
* correct some broken urls/checksums
* use secure urls where possible
* use stable url for ncurses
* some whitespace fixes

Remaining md5sums either didn't download or
didn't pass checksum tests.

perl-LWP-Protocol-https/PKGBUILD

@@ -12,7 +12,7 @@ license=('PerlArtistic' 'GPL')
 depends=('perl' 'perl-IO-Socket-SSL' 'perl-Mozilla-CA' 'perl-Net-HTTP' 'perl-libwww')
 options=('!emptydirs')
 source=("http://search.cpan.org/CPAN/authors/id/M/MS/MSCHILLI/${_realname}-$pkgver.tar.gz")
-md5sums=('06f5dfd33b07f6594a429dbbd5e6a2d1')
+sha256sums=('b86c83cc1dcf4a6f84e2fbe32f9c39591a36e6e418af00533505f3452496adef')
 
 build() {
   cd ${_realname}-${pkgver}