Fix pep8 violations.

This commit fixes:

shell> pep8 qt4reactor.py
qt4reactor.py:12:1: W293 blank line contains whitespace
qt4reactor.py:48:80: E501 line too long (87 > 79 characters)
qt4reactor.py:51:80: E501 line too long (88 > 79 characters)
qt4reactor.py:74:5: E303 too many blank lines (2)
qt4reactor.py:82:5: E303 too many blank lines (2)
qt4reactor.py:86:80: E501 line too long (89 > 79 characters)
qt4reactor.py:87:9: E301 expected 1 blank line, found 0
qt4reactor.py:101:47: E261 at least two spaces before inline comment
qt4reactor.py:101:80: E501 line too long (97 > 79 characters)
qt4reactor.py:109:9: E301 expected 1 blank line, found 0
qt4reactor.py:112:1: W293 blank line contains whitespace
qt4reactor.py:127:1: E303 too many blank lines (3)
qt4reactor.py:140:22: E225 missing whitespace around operator
qt4reactor.py:141:25: E225 missing whitespace around operator
qt4reactor.py:144:25: E225 missing whitespace around operator
qt4reactor.py:149:5: E303 too many blank lines (2)
qt4reactor.py:160:5: E303 too many blank lines (2)
qt4reactor.py:167:5: E303 too many blank lines (2)
qt4reactor.py:174:5: E303 too many blank lines (2)
qt4reactor.py:185:1: W293 blank line contains whitespace
qt4reactor.py:186:5: E303 too many blank lines (2)
qt4reactor.py:193:5: E303 too many blank lines (2)
qt4reactor.py:200:5: E303 too many blank lines (2)
qt4reactor.py:208:5: E303 too many blank lines (2)
qt4reactor.py:212:5: E303 too many blank lines (2)
qt4reactor.py:216:5: E303 too many blank lines (2)
qt4reactor.py:216:23: E231 missing whitespace after ','
qt4reactor.py:217:31: E231 missing whitespace after ','
qt4reactor.py:222:5: E303 too many blank lines (2)
qt4reactor.py:226:1: W293 blank line contains whitespace
qt4reactor.py:228:5: E303 too many blank lines (2)
qt4reactor.py:237:80: E501 line too long (89 > 79 characters)
qt4reactor.py:238:1: W293 blank line contains whitespace
qt4reactor.py:255:5: E303 too many blank lines (2)
qt4reactor.py:260:5: E303 too many blank lines (2)
qt4reactor.py:274:1: W293 blank line contains whitespace
qt4reactor.py:275:5: E303 too many blank lines (2)
qt4reactor.py:282:5: E303 too many blank lines (2)
qt4reactor.py:290:5: E303 too many blank lines (2)
qt4reactor.py:295:80: E501 line too long (90 > 79 characters)
qt4reactor.py:308:5: E303 too many blank lines (2)
qt4reactor.py:318:1: W293 blank line contains whitespace
qt4reactor.py:319:5: E303 too many blank lines (2)
qt4reactor.py:324:5: E303 too many blank lines (2)
qt4reactor.py:352:80: E501 line too long (81 > 79 characters)
qt4reactor.py:359:1: W391 blank line at end of file
Fix pep8 violations.

This commit fixes:

shell> pep8 gtrial.py
gtrial.py:5:1: W293 blank line contains whitespace
gtrial.py:12:1: E302 expected 2 blank lines, found 1
gtrial.py:15:21: E225 missing whitespace around operator
gtrial.py:16:1: W293 blank line contains whitespace
gtrial.py:21:1: W293 blank line contains whitespace
gtrial.py:22:1: E302 expected 2 blank lines, found 1
gtrial.py:24:6: E225 missing whitespace around operator
gtrial.py:25:1: W293 blank line contains whitespace
gtrial.py:27:1: W293 blank line contains whitespace
gtrial.py:31:1: W293 blank line contains whitespace
gtrial.py:33:1: W293 blank line contains whitespace
gtrial.py:37:1: W293 blank line contains whitespace
gtrial.py:41:1: W391 blank line at end of file
Fix pep8 violations.

This commit fixes:

shell> pep8 setup.py
./setup.py:10:12: E225 missing whitespace around operator
Fix pep8 violations.

This commit fixes:

shell> pep8 twisted/plugins/qt4.py
./twisted/plugins/qt4.py:9:1: W391 blank line at end of file
Merge pull request #11 from ivanalejandro0/make-code-pep8-compliant

Make code pep8 compliant