Minor changes

doc/wiki/using-mmgen/Altcoin-and-Forkcoin-Support.md

@@ -51,7 +51,7 @@ dependencies:
 *Note: Ubuntu Xenial users will have to upgrade the Python interpreter and
 Python dependencies listed in the [Install wiki][iw] from version 3.5 to 3.6
 before proceeding.  This can be done by adding the Bionic repository to
-'sources.list' and installing the relevant packages with '-t bionic'*
+'sources.list' and reinstalling the relevant packages with '-t bionic'*
 
 	$ sudo -H pip3 install wheel future pysha3 PyYAML py_ecc rlp
 
@@ -148,7 +148,7 @@ Clone the repository and build:
 
 	$ git clone --recursive https://github.com/ethereum/solidity.git
 	$ cd solidity
-	$ git checkout v0.5.1 # v0.5.3 doesn't build on Raspbian Stretch
+	$ git checkout v0.5.1 # or v0.5.3, if not Raspbian Stretch
 	$ ./scripts/install_deps.sh # Raspbian Stretch: add `DISTRO='Debian'` after line 55
 	$ mkdir build
 	$ cd build

mmgen/tx.py

@@ -86,7 +86,7 @@ def segwit_is_active(exit_on_error=False):
 	d = g.rpch.getblockchaininfo()
 	if d['chain'] == 'regtest':
 		return True
-	if (	'bip9_softforks' in d
+	if (    'bip9_softforks' in d
 			and 'segwit' in d['bip9_softforks']
 			and d['bip9_softforks']['segwit']['status'] == 'active'):
 		return True

test/gentest.py

@@ -161,7 +161,8 @@ def match_error(sec,wif,a_addr,b_addr,a,b):
 def compare_test():
 	for k in ('segwit','compressed'):
 		if addr_type.name == k and g.coin not in ci.external_tests_segwit_compressed[k]:
-			msg('{} testing not supported for coin {}'.format(addr_type.name.capitalize(),g.coin))
+			m = 'skipping - external program does not support {} for coin {}'
+			msg(m.format(addr_type.name.capitalize(),g.coin))
 			return
 	if 'ext_lib' in globals():
 		if g.coin not in ci.external_tests[('mainnet','testnet')[g.testnet]][ext_lib]: