Released version 1.52

Changes from version 1.48:

* Fixed bug: segmentation fault on x86_64 architecture.

* Fixed bug: log file filemode forced to 0600.

* Added "persist" field attribute to save fields value between CCFE executions.

* Added "PERS_WRITE_ERROR_TITLE" and "PERS_WRITE_ERROR_MSG" in messages definition file.

* Some changes were made to ccfe(1), ccfe_form(5), ccfe.conf(5) and ccfe_menu(5) manual pages.

* Fixed bug: sometimes CWD not correct when executing scripts located in $HOME/.ccfe subdirectory.

* Fixed bug: in Output Browser screens, lines long exactly as screen width are followed by an empty line.

* Improved configuration files parsing for better diagnostic (when debugging enabled).

* Added "end_marker" configuration parameter in browser_global{} section.