Poco::format() misorders sign and padding specifiers

[pprindeville]

If I run in a debugger:

Poco::format("%+03d", -7)

I get "0-7" as the output. This is wrong.

This breaks down as:

stream << setiosflags(ios::showpos) << setfill('0') << setw(3) << -7 << endl;

which not surprisingly, generates the same incorrect response...

I'd recommend processing the sign separately in formatOne() for the specifier '+', i.e.

stream << setiosflags(ios::showpos) << setw(1) << -7

then resetting the ios::showpos flag and shaving 1 off the width, and setting the fill, then passing the value a 2nd time.

[obiltschnig]

Proper solution is to use formatting flag std::ios::internal along with std::ios::showpos.
Fixed in develop and 1.4.6p2.

[aleks-f]

This change broke gcc 4.2, calls to format now hang. Reproduced on mac and FreeBSD, did not have time to investigate further.

[obiltschnig]

Can not reproduce this on my mac FormatTest works fine with gcc 4.2.

[aleks-f]

The problem seems to be in the order of declaration/definition of AnyCast functions:

template
ValueType AnyCast(const Any& operand)

// ...

template
ValueType AnyCast(Any& operand)

The first one, when called, goes tail-spinning in a recursive call. Looking at it, it makes sense but I'm not sure how/why did this work so far and started manifesting itself all of a sudden.

I'l fix this later.