Replace getenv("TEMP") by RDTempFile() in RDAudioConvert::convert
Replace getenv("HOME") by RDGetHomeDir() in RDCartDialog::LoadState/SaveState. Create RDCartDialog::StateFile to share logic
Replace getenv("HOME") by RDGetHomeDir() in RDCutDialog::LoadState/SaveState. Create RDCutDialog::StateFile to share logic
Replace getenv("TEMP") by RDTempFile() in RDFormPost::RDFormPost
Replace getenv("HOME") by RDGetHomeDir() in RDMonitorConfig::RDMonitorConfig
Replace getenv("TEMP") by RDTempFile() in RDParsePost
Replace getenv("HOME") and hardcoded "/tmp" by RDGetHomeDir() and RDTempDir() in UpdateDb
Replace getenv("HOME") by RDGetHomeDir() in MainWidget::LoadGeometry/SaveGeometry. Create MainWidget::GeometryFile to share logic
Replace getenv("HOME") by RDGetHomeDir() in rdlibrary MainWidget::LoadGeometry/SaveGeometry. Create MainWidget::GeometryFile to share logic
Replace getenv("HOME") by RDHomeDir() rdchunk MainWidget::loadWaveFile()
Replace hardcoded "/tmp" by RDTempFile()
Merge pull request #8 from tryphon/replace-getenv-by-rdconf

Replace getenv by rdconf functions

We really should retire RDTempFile() altogether, as it is arguably broken.

Merged in origin master.  Thanks!