EShellSettings predates GSettings and is no longer necessary.
GSettings allows binding GObject properties to GSettings keys,
with optional mapping functions. That fulfills the purpose of
EShellSettings.
Exposing data members in the public struct is unwise, especially when
EMailPartList is used from multiple threads. Instead keep the members
private and provide a set of thread-safe functions to manipulate them.
Fix deadlock in EHttpRequest by running each libsoup operation in
it's own GMainContext.
The patch also replaces use of features from libsoup>=2.39, because
we can't change dependency. The code is based on code from CalDAV,
which uses synchronous libsoup API as well and works with
libsoup<2.39
Simplify the EHttpRequest by using synchronous libsoup API instead
of spawning another async operation within already asynchronous handler.
This avoids nested event loop, complex locking and makes to code much
simpler.
All mail-parsing and formatting code has been moved to em-format.
Parsing is handeled by EMailParser class, formatting by EMailFormatter.
Both classes have registry which hold extensions - simple classes
that do actual parsing and formatting. Each supported mime-type
has it's own parser and formatter extension class.
This splits the giant EMailRequest to individual EFileRequest, EStockRequest, EHTTPRequest and EMailRequest,
making the first two available globally from e-utils, the othe two are loaded only with mailer,
since no other component uses them.
