bug 2857: fix UTF-8 conversion issues in web services

bug 2857: fix UTF-8 conversion issues in web services

svc/bib and svc/new_bib had two problems related to UTF-8 character conversion:

[1] Couple instances of "Wide character" warnings
[2] When saving a new (MARC21) bib whose Leader/09 was not 'a', did not apply
default character conversion and set the Leader/09 to 'a'.

Fix includes two parts:

[1] Setting :utf8 on STDOUT
[2] Doing default MARC-8 to UTF-8 conversion if applicable

This patch also turns on warnings in all scripts under svc per bug 2505.

Signed-off-by: Galen Charlton <galen.charlton@liblime.com>