Text and language editing of release-notes.md

Added changes taken from Gavin's notes; fixed line wrapping; some small language changes.
Clarify the error message when unable to bind to port

When bitcoind can't bind, bitcoin server (or Bitcoin Core Daemon) is
probably already running. Add the missing word "server". Bitcoin itself
is definitely running ;-)

Add _(...) so the string can be localized.

Rebased-From: 094eeff, 2d2d8fa
Update release notes for 0.9.0rc3

No new features/bugfixes to be mentioned, but some authors have
contributed minor changes so add them to the credits.
Display progress of rescan.

Rebased-From: 75b8953
qt: Make it possible again to specify -testnet in config file

Changes for the datadir chooser have made it impossible to specify
the network (testnet/regtest) in the configuration file for the GUI.

Reorganize the initialization sequence to make this possible again.

- Moves the "datadir" QSetting so that is no longer dependent on the
  network-specific application name (doing otherwise would create a
  chicken-and-egg problem).

- Re-initialize translations after choosing network. There may be a
  different language configured in network-specific settings
  (slim chance, but handle it for sanity).

Fixes point 1 of #3840.

Rebased-From: c52c4e5
Update release notes for mining change

Mining code fee policy now matches relay fee policy (1eedbbb)
Fix release notes transaction fees
Warn about downgrading to 0.8.x

Fixes #3782
release notes: command line option is spendzeroconfchange

nospendzeroconfchange is valid as well on the command line,
but confusion about the name of the option was causing people to do things like
nospendzeroconfchange=0/1.
README and INSTALL modded for Sexcoin
autoconf mods to build sexcoind and sexcoin-cli

Changes to build binaries named sexcoind and sexcoin-cli while library names
remain "bitcoin". Some filename changes for icons and Mac OSX app and
directory names.
Fix copyright line inadvertently removed
remove an unecessary bit/sex conversions
more automake changes to really have binaries named sexcoind/-cli
add scrypt and make network changes for sexcoin

at this point sexcoind builds, runs, and syncs to block ~155K. That was the
first hardfork where the original retargeting calculation changed.

There is another retargeting change at block 572K. The next commit(s) should
be for incorporating the retargeting formula changes into the Parameter
classes and making them blockheight aware to be able to return the proper
parameters based on block height.